محاسبه‌ی میدان تنش مجانبی به همراه ضرایب شدت تنش و مرتبه بالاتر در شیار کلیدی‌شکل

نوع مقاله: مقاله علمی پژوهشی

نویسندگان

1 دانشکده مهندسی مکانیک، دانشگاه علم و صنعت ایران

2 دانشگاه علم و صنعت ایران

چکیده

در پژوهش حاضر، ابتدا توزیع تنش مجانبی مود I بارگذاری با استفاده از روش توابع پتانسیل مختلط برای شیار‌های کلیدی‌شکل محاسبه شده‌است. سپس از روش فرامعین برای محاسبه‌ی ضرایب شدت تنش و ضرایب مرتبه بالاتر سری بدست آمده، استفاده می-شود. در پایان نیز برای ارزیابی صحت ضرایب محاسبه شده، میدان تنش حاصل از توزیع تنش مجانبی با مقادیر اجزا محدود مقایسه می-گردد. نتایج نشان می‌دهند که در نظر گرفتن ترم اول یا همان ترم تکین به تنهایی منجر به خطای زیادی در محاسبات می‌شود.

کلیدواژه‌ها

موضوعات


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